import FWCore.ParameterSet.Config as cms

externalLHEProducer = cms.EDProducer("ExternalLHEProducer",
    args = cms.vstring("/cvmfs/cms.cern.ch/phys_generator/gridpacks/UL/13TeV/madgraph/V5_2.6.5/st_tch_4f_ckm_UL_powheg_madspin/st_tch_4f_ckm_antitop_13TeV_wtop1p15_UL_powheg_madspin_slc7_amd64_gcc700_CMSSW_10_6_19_tarball.tar.xz"),
    nEvents = cms.untracked.uint32(5000),
    numberOfParameters = cms.uint32(1),
    outputFile = cms.string('cmsgrid_final.lhe'),
    scriptName = cms.FileInPath('GeneratorInterface/LHEInterface/data/run_generic_tarball_cvmfs.sh'),
    generateConcurrently = cms.untracked.bool(True)
)

#Link to datacards:
# https://github.com/swertz/genproductions/tree/efcb4d0f1e4543526bf27c41d0eb7f2cb04a9a19/bin/MadGraph5_aMCatNLO/cards/production/2017/13TeV/st_tch_4f_ckm_13TeV_UL/st_tch_4f_ckm_width_variations
# https://github.com/cms-sw/genproductions/pull/3103

from Configuration.Generator.Pythia8CommonSettings_cfi import *
from Configuration.Generator.MCTunes2017.PythiaCP5Settings_cfi import *
from Configuration.Generator.Pythia8PowhegEmissionVetoSettings_cfi import *
from Configuration.Generator.PSweightsPythia.PythiaPSweightsSettings_cfi import *

generator = cms.EDFilter("Pythia8ConcurrentHadronizerFilter",
    maxEventsToPrint = cms.untracked.int32(1),
    pythiaPylistVerbosity = cms.untracked.int32(1),
    filterEfficiency = cms.untracked.double(1.0),
    pythiaHepMCVerbosity = cms.untracked.bool(False),
    comEnergy = cms.double(13000.),
    PythiaParameters = cms.PSet(
        pythia8CommonSettingsBlock,
        pythia8CP5SettingsBlock,
        pythia8PowhegEmissionVetoSettingsBlock,
        pythia8PSweightsSettingsBlock,
        processParameters = cms.vstring(
            'POWHEG:nFinal = 3',   ## Number of final state particles
                                   ## (BEFORE THE DECAYS) in the LHE
                                   ## other than emitted extra parton
        ),
        parameterSets = cms.vstring('pythia8CommonSettings',
                                    'pythia8PowhegEmissionVetoSettings',
                                    'pythia8CP5Settings',
                                    'pythia8PSweightsSettings',
                                    'processParameters'
                                   )))

ProductionFilterSequence = cms.Sequence(generator)